CW25-GDO-DK1-010.0.M

Application Specific Clock/Timing Overview

The CW25-GDO-DK1-010.0M is a GPS receiver and disciplined oscillator module designed for time and frequency synchronization. It integrates a 72-channel GPS receiver with an NS2D04 synchronizing ASIC, providing phase-aligned outputs including a 1PPS signal and two 10MHz clock signals. The module operates on a 3.3V supply within a -20°C to +70°C temperature range. It features a programmable frequency output from 150Hz to 80MHz and supports holdover via an onboard TCXO or external reference inputs.

Application Specific Clock/Timing Feature Summary

• Integrates a 72-channel GPS receiver with tracking sensitivity to -167 dBm
• Generates phase-aligned 1PPS output and two 10MHz LVCMOS clock outputs
• Programmable frequency output ranging from 150Hz to 80MHz in 8kHz increments
• Supports autonomous phase calibration to eliminate sawtooth error

Application Specific Clock/Timing Applications

• Wireless communication systems requiring high-stability frequency references
• Software Defined Radio (SDR) applications
• IEEE 1588v2 precision time protocol implementations
• Time stamping and long-term time/frequency generation

Application Specific Clock/Timing Procurement Notes

Verify the specific suffix DK1 against the datasheet SG203 to confirm the 10MHz LVCMOS output configuration. Ensure the host system provides a stable 3.3V supply with less than 50mV peak-to-peak noise on RF and digital rails. Confirm antenna interface requirements match the RF_IN castellation or connector options.

Application Specific Clock/Timing Selection Notes

Select this module when phase-aligned timing and UTC synchronization are required. The DK1 variant specifically provides dual 10MHz LVCMOS outputs. Consider the optional external 10MHz input for improved holdover performance if higher stability is needed during GPS signal loss. Verify that the operating temperature range of -20°C to +70°C meets environmental constraints.

Application Specific Clock/Timing Part Context

This component belongs to the CW25-GDO-DK series of GPS receiver and disciplined oscillator modules. It utilizes Connor-Winfield's NS2D04 synchronizing ASIC to combine GNSS reception with digital PLL disciplining. The series is designed for compact surface-mount integration in synchronization applications.

Application Specific Clock/Timing Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. The CW25-GDO-DK2 variant offers different output logic (LVPECL/LVDS) and frequencies; verify electrical compatibility before substitution.